Lock



'S. SEGAL LOCK Jan. 22, 1929. 1,699,757

Filed Jan. 1926 INVEN'TOR.

Patented Jan. 22, 1929.

UNITED STATES PATENT I oFFlcE.

SAMUEL SEGAL, OF NEW YORK, N. Y., ASSIGNOR T0 SEGAL LOCK & HARDWARE 00.,INC., 0]? NEW YORK, N. Y., A CORPORATION OF NEW YORK.

LOCK.

Application filed J'anuary'S, 1926. serial No. 80,207.

This invention relates to a. cylinder lock of improved construction.

It is an object of the invention to provide a lock the parts of whichmay be readily manufactured at a nominal cost, and which parts may beassembled with-facility and by the aid of comparatively unskilled labor.

It is a further object of the invention to provide a device of thenature aforestated in which the likelihood of breakage is reduced to aminimum, and in which the parts are adequately protected against theentrance of foreign matter, in addition to the fact that the parts maybe readily disassembled by a locksmith when this becomes necessary.

- Other objects of the invention will in part be obvious and will inpart appear hereinafter.

With these and further objects in mind, the invention accordinglycomprises the features of construction, combination of elements andarrangement of parts which will be exemplified in the constructionhereinafter set forth, and the scope of the application of "which willbe indicated in the claims.

For a fullerlunderstanding of the nature and objects of the inventionreference should be had to the following detailed description taken inconnection with the accompanying drawings, in which:

Figure 1 is a sectional side view of a cylinder lock embracing one formof construction embodying the subject matter of the present invention;

Fig. 2 is a thereof; and

Fig. 3 is a fragmentary plan View of a different form of constructionwhich may be utilized.

In these views the numeral 5 indicates the lock cylinder, within thebore of which a key plug 6 is rotatably mounted, the latter, for thesake of illustration, in the present instance being retained againstlongitudinal movement by means of a head 7 and a cap washer 8 with whicha tailpiece 9 is associated.

As in conventional construction, the cylinder body 5 has a block-likeextension 10 formed with a suitable number of bores 11 extending atright angles to the plug axis. Each of thesebores houses at its lowerend apin 12, which latter are pressed by springs 13 into-contact withthe plug 6 and cooperate partly sectional end elevation .thus assured.

with the tumblers latter.

It wlll be noted, as in Figs. 1 and 2 that (not shown) carried by thecontrary to conventional construction, the

an opening formed in the strip 15 adjacent the rear end of the latter.

'With reference to the construction illustrated in Fig. 3, it will beobserved that the longitudinally-extending bore which intersects thespring and pm housing bores is tapered towards the forward end of thecylinder, as has been indicated at 18. The body of the strip 19, whichcorresponds to the strip 15, is cut accordingly, and it will beunderstood that a wedge-fit of the parts is In both of the illustratedforms of the invention it will be appreciated that the parts may readilybe constructed, and with particular reference to Figs. 1 and 2 it willbe perceived that the plug and cylinder may be assembled and the springsand pins placed in position, subsequently to which the plug 16 ismounted within the rearmost bore 11 and in contact with the upper end ofthe spring positioned therein. With the springs and the plug retained inretracted position the strip 15 may now he slid into the bore 14, andupon this strip reaching its proper station the pin 17 will snap throughthe opening thereof, thus locking the strip against further movement.This operation may obviously be performed by unskilled labor, and theplug 16 will'serve to prevent the entrance of foreign matter throughthat portion of the bore 14 which is adjacent the rear of the cylinder.If it becomes necessary for a locksmith or other person to disassemblethe cylinder, this may readily be accomplished by simplybearing againstthe outer end of the pin 17 until the latter reaches a position adjacentor below the inner face of the strip 15, at which time this strip ma beretracted. It is obvious that the bore 14 oes not necessarily have to becircular in cross section, but is merely so shown in that an opening ofthis nature may be readily formed by automatic machinery. Likewise, thestrip 15 may be of any desirable shape consistent with the contour ofthe o ening within which it is dis-- prevent an accidental retraction ofthe strip from within the bore, particularly in view of the fact thatthese parts are usually not subjected to any strain. If a locking pin orplug is employed, a double safeguard against accidental displacement isprovided.

Thus, among others, the objects of this invention have beenaccomplished, and since certain changes may be made in the aboveconstruction, and diiferent embodiments of the invention could be'made,without departing from the scope thereof, it is intended that all mattercontained in the above description or shown in the accompanying drawingsshall .be interpreted as illustrative and not in a limiting sense.

It is also to be understood that the following claims are intended tocover all of the eneric and s ecific features of the invention automaticmeans for locking said 'stri herein descri ed and all statements of, thescope of the invention which as a matter of language might be said tofall therebetween.

Having described my invention, what I claim as new and desire to secureby Letters Patent is:

1. In a cylinder lock, the combination with a cylinder body formed witha spring and pin housing bore and an opening intersecting said bore at apoint short of the outer end p thereof, of means movable into positionto. close the bore.

2. In a cylinder lock, the combination with a cylinder body formed witha plurality of spring and pin housing bores and an openingextendingtransversely of said bores, of a strip projectable within saidopening, and in position upon its reaching a predetermined position andat which it closes said bores.

3. In a cylinder lock, the combination with a cylinder body formed witha plurality of spring and pin housing bores and an opening extendingtransversely of said bores, of a strip projectable within said opening,and

spring-pressed means engaging said strip and operating automaticallyupon the same upper end of said bore, of means disposed within saidopening to close said bore, said plug bearing agalnst said means. 5. Acylinder lock, including a body formed with a bore, a pin within thelower end'oi said bore, a spring bearing against said pin, a plugagainst which the upper end of said spring bears, a pin forming a partof said plug, said body being formed with an opening adjacent the upperend of said bore, and a strip movable into said opening and being formedwith an aperture within which the pin carried by said plug may ride tolock said strip in position. v 6. A cylinder lock, including,incombination, a cylinder body formed with a plurality of bores, pinspositioned within the lower ends of said bores, springshaving theirlower ends bearing against said pins, a plug mounted within one of saidbores and engaging the upper end of the spring positioned therein, saidbody being formed with an opening at a point adjacent the outer ends ofsaid bores, and a strip movable into said opening, said .plug bearingagainst said stri to prevent an accidental displacement thereo 7. Acylinder lock, including, in combination, a cylinder body formed with aplurality of bores, pins positioned within t e lower ends of said bores,springs having their lower ends bearing against said pins, a plugmounted within one of said bores and engaging the upper end of thespring positioned therein, said bod being formed with an opening at apoint adjacent the outer ends of said bores, a strip movable into saidopening, said strip being formed with an opening which is in line withsaid plug when said strip is in applied position, and a pin forming apart of said lu and entering said strip opening in such position toprevent a displacement of said parts.

8. A cylinder lock, including, in combination, a cylinder body formedwith a pin and spring housin bore and an opening extend ing transverse yof said bore and adjacent the outer end thereof, said opening beintapered, and a strip movable into said tapered opening to close the boreformed in said cylinder body.

9. A cylinder lock, including, in combination, a cylinder body formedwith a pin and spring housing bore and an openin intersecting said boreagainst the upper end thereconcaved face of said strip to cause theconvex face thereof to bear against the side wall of such body forclosing the outer ends of said tumbler bores, and means for last-namedmeans against accidental movement.

11. A look, including, in combination, a cylinder formed with aplug-receiving bore and a plurality of tumbler bores extending throughits body to said first-named bore, means movableto a position at whichit closes the outer ends of said tumbler bores, and means actingautomatically to lock said latter means against movement as it reachesits bore-sealing position.

12. A look, including, cylinder body and a. block said body, said bodybeing formed with a in combination, a

locking said forming a part of plug-receiving bore,

with an opening, said pin,

and a plurality of tumbler-receiving bores extending from said latterbore within said block and to the outer edge of the same, removablemeans for closing the outer ends of said bores, automatically upon saidlast-namedv means reaching a positionlat which it closes said bores, tolock the same against movement with respect to said cylinder body.

13. A look, including, in combination, a cylinder body formed with aplug-receiving bore and a bore extending therefrom to the outer face ofsaid body, a spring Within said latter bore,

a pin also within said bore andand means acting engaged by said spring,and av plate closing the outer end of said bore and being formed whensaid plate reaches a position closing the outer bore end, entering saidopening to prevent movement gfdsaid plate with respect to said cylinderI1 1 testimony whereof 1 affix my signature.

SAMUEL sEGALI

